218 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Pars cephalica rather broader and less convex along anterior margin 
than in related species. 
Clypeus slanting. 
Eyes large; five sixths their diameter apart, a little less than three 
times their diameter (25:9) from lower edge of clypeus. Eye-tubercle 
rather low but distinct, (Plate 10, fig. 7). 
Sternum longer than wide in ratio 25:19; narrowing from middle 
caudad with the caudal end obtusely rounded, (Plate 10, fig. 6). 
Labium subcordate; distally acute; basal notches short, relatively 
deep; a little longer than wide, the ratio being about 17:16, (Plate 10, 
fig. 8). 
Coxae I and IV longer than others, subequal or I but slightly longer 
than IV. Trochanter IV longest, I next. 
Claws of anterior legs with five long, stout teeth. An unpaired 
claw is present on anterior legs, this being rather long, parallel with 
paired claws, smooth. Membranous laminae below claws as in other 
species, (Plate 11, fig. 3). Membranous appendage at base of ante- 
rior tarsi and the membranous keel beneath anterior metatarsi as in 
other species of the genus. All tarsi distinctly clavate excepting the 
fourth which is but slightly so and more slender. The division of 
tarsus most complete in fourth legs in which the parts are flexible at 
joint. Hairs of tarsus all simple, none clubbed as e. g., in coccineus, 
(Cf. Plate 115, fig. 2); 
Inferior piece of lorum of pedicel as usual. 
Inferior and median spinnerets in a recurved transverse row as in 
the other species. The superior spinnerets shorter than in most 
species, not so much exceeding those of the lower row. 
Female. Length 6.7 mm. 
total 
coxa fem. pat. tib. met. tar. (excl. coxa) 
Leg I 46mm. 1.6mm. .8mm. 1.03mm. .84mm. .56mm. 4.84mm. 
Leg IT 6 1.36 8 .92 8 .56 4.52 
Leg III .52 122 .68 .88 8 96 4.12 
Leg IV 72 1.6 8 1.28 1.36 42 5.76 
Locality.— Ollantaytambo, 9,000 feet, July. (Type, M. C. Z. 168, 
one female). 
This form differs from all other species of the genus, according to 
the published accounts, in having a large median claw on the anterior 
tarsi in addition to the paired membranous laminae. Simon, in dis- 
cussing the Caponidae, says in regard to the inferior claw in this 
